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65 lines
2.3 KiB
C++
65 lines
2.3 KiB
C++
//===--- CSFix.cpp - Constraint Fixes -------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the \c ConstraintFix class and its related types,
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// which is used by constraint solver to attempt to fix constraints to be
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// able to produce a solution which is easily diagnosable.
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//
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//===----------------------------------------------------------------------===//
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#include "CSFix.h"
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#include "CSDiagnostics.h"
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#include "ConstraintLocator.h"
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#include "ConstraintSystem.h"
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#include "swift/AST/Expr.h"
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#include "swift/AST/Type.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace swift;
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using namespace constraints;
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ConstraintFix::~ConstraintFix() {}
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void ConstraintFix::dump() const { print(llvm::errs()); }
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bool ForceDowncast::diagnose(Expr *expr, const Solution &solution) const {
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MissingExplicitConversionFailure failure(expr, solution, getLocator(),
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DowncastTo);
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return failure.diagnose();
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}
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void ForceDowncast::print(llvm::raw_ostream &Out) const {
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Out << "[fix: force downcast (as! " << DowncastTo->getString() << ")]";
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}
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bool ForceOptional::diagnose(Expr *root, const Solution &solution) const {
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MissingOptionalUnwrapFailure failure(root, solution, getLocator());
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return failure.diagnose();
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}
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bool UnwrapOptionalBase::diagnose(Expr *root, const Solution &solution) const {
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bool resultIsOptional = false; // FIXME: figure out a way to implement this.
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MemberAccessOnOptionalBaseFailure failure(root, solution, getLocator(),
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MemberName, resultIsOptional);
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return failure.diagnose();
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}
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bool AddAddressOf::diagnose(Expr *root, const Solution &solution) const {
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MissingAddressOfFailure failure(root, solution, getLocator());
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return failure.diagnose();
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}
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bool CoerceToCheckedCast::diagnose(Expr *root, const Solution &solution) const {
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MissingForcedDowncastFailure failure(root, solution, getLocator());
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return failure.diagnose();
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}
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